Heating apparatus.



R. E. MACKEY & w. A. TIPTON. I HEATING APPARATUS. 1

APPLICATION FILED APR.10, 1915- 1,175,069. Patentd Mar. 14, 1916.

UNITED STATES OFFC.

I RICHARD E. MACKEY AND WILLIAM A. TIPTON, OF ST. LOUIS, MISSOURI.

HEATING APPARATUS.

To all whom it may concern:

Be it known that we, RICHARD E. MAOKEY and WILLIAM A. TIPTON, citizens of the United States, residing at the city of St.

Louis and State of Missouri, have invented a new and useful Heating Apparatus, of which the following is a specification.

This invention relates to improvements in heatingapparatus and consists in the novel construction hereinafter more fully disclosed.

An object of the invention is to provide an efficient heating apparatus which will be economical in operation with provision for utilizing to the maximum degree the heat radiated from the fire chamber of the apparatus.

Another object of theinvention is to provide a heating apparatus comprising an- 2o outer casing and a heating drum disposed therein, in combination with novel means for distributing the incoming air substantially uniformly throughout the area between the heating drum and the outer casing and for distributing the heated air throughout the system.

Another object of the invention is to equip a furnace of the hot airtype with means for introducing the fresh air under a forced 80 draft and passing the same through beds of material heated by radiated heat and distributing the heated air from the lower portion of the furnace to the distributing system.

Another object of the invention is to equip a furnace of the type described with means for increasing the combustion of the fuel thereby reducing the amount of smoke emanating from the bed of fuel in the process of 40 combustion.

Having in view particularly the objects mentioned and also additional advantages attainable from the improved construction of the present invention we have designed,

combined and arranged a heating apparatus as hereinafter disclosed in detail, reference being made to the accompanying drawings in which Figure 1 is a perspective view of an apparatus with portions broken away to more fully disclose the construction showing in assembled relation the parts and features of a preferred embodiment of the invention. Fig. 2 is a cross section taken substantially on the line 22 of Fig. 1 showing the disposition of the deflecting walls for the dis- Specification of Letters Patent.

Patented Mar. 14, 1916.

walls of the intake conduit in the elbow above the furnace case. Fig. 4 is a cross section through the upper portion of the apparatus showing further details of construction. Fig. 5 is a cross section taken substantially on the line 55 of Fig. 1 showing a supporting frame for the bed of heat radiating material, and Fig. 6 is an elevation of the upper section of a modified embodiment of the invention.

Inthe embodiment of the invention illustrated in the drawing the furnace casing 1 is carried by a plate or base casting 2 which is mounted upon a foundation 3 of substantial construction, being made-preferably of concrete.

A pit4 is formed in the foundation and disposed below the base of the furnace. Distributing pipes 5, preferably embedded in the foundation, lead from the pit 4. The base casting 2 is in the form of an annular ring having a plate 6 for supporting the ash pit and arms 7 extending inwardly from said ring and connecting with the plate thereby providing spaces or passage-ways between the plate and the ring for the passage of the heated air from the easing into the pit.

Within the casing 1 and supported by the plate 7 is an ash pit 8 to which access is gained through an ash pit opening equipped with an ash pit door 9. Above the ash pit and arranged in the usual manner is a re pot or drum 10 from the upper portion of which extends a dome 11 into which a radiator casting 12 of known construction connects. Access to the fire pot or drum is attained through the usual charging openmg which is equipped with a door 13.

It will be understood that the construction of the ash pit, fire pot, dome and radiator, is substantially that which is well known in furnaces of the hot air type and that there is no claim of novelty to any specific form, design or arrangement of these parts and that they are specifically described merely for the urpose of making clear the embodiment of the present invention.

The design and purpose of the heating apparatus is to introduce a continuous volume of fresh cool air into the top of the casing and distribute the same substantially uniformly throughout the area between the interior heating elements of the furnace and the casing and to force the same downwardly through beds of material from which heat is radiated into the pit below the furnace from which it is distributed through 1 furnace casing. Within the hood 18 is a beds of heat radiating material.

series of concentrically arranged circular parallel walls 18 which incline outwardly from the top of the hood substantially parallel with the side walls thereof. Thus the air entering the section 16 is deflected as it passes through said section and the hood 18 so that it will be distributed substantially uniformly as it is emitted into the top of the casing 1 of the apparatus. Within the s ace between the inner wall of the casing an the fire pot and arranged on different horizontal planes are provided supporting frames for The supporting frames comprise a series of supporting arms in the form of angle plates 19 secured to the casing and arranged in a series on radial lines. Thebrackets 19 are adapted to support respectively an annular reticulated wall 20 formed preferably of wire screening or other suitable material.

In the embodiment of the invention illustrated in the drawing we have shown two of the supporting frames formed as described but it will be understood that one or any greater number may be used as desired. Upon each of the supporting frames isarranged a bed 21 of metal clippings or other I material that will radiate heat. Thus it will be understood that the air entering the top of the casing as it is forced downwardly passes through the interstices between the metal clippings, forming the beds 21, from which beds in addition to the heat radiated from the fire pot, radiator, and dome, it receives additional heat units. Thus it will be seen that the heating surface with which the air is compelled to come in contact with before exiting into the pit 4, is greatlyinw creased by the fact that it is compelled to pass through the heated material forming the beds 21. This construction not only facilitates the heating of the air but utilizes to a greater degree the heat units generated by the bed of fuel.

An additional feature of'the present invention is the forced draft air supply to the combustion chamber, two forms of which are shown in the drawings.

That form shown in Fig. 1 of the drawings consists in a bypass conduit 22 which leads through an opening 23 in the casing 1 into the dome .11 which surmounts the 'fire pot 10, from the fresh air'conduit 15. In the form shown in Fig. 6 the supply passage 22 is supplied from an independent blower 24:. It is con- I v templated in the embodiment shown in Fig. 6 thatthe air supply will be taken from the lower portion of the casing and will exit through the conduit 15.

It will be readily apparent that the de vice for supplying a volume of air to the fire pot may also be applied to a furnace of any type, such for instance as a furnace of a hot water or steam heater or other similar apparatus. It will also be understood that the purpose of the introduction of the fresh air to the fire pot is to increase the supply of oxygen in the combustion chamber thereby causing an increased degree of combustion, resulting in saving of fuel, as well as reducing the volume of smoke or' products 1 of combustion passing off from the bed of fuel. The products of combustion pass from the fire pot into the radiator from whence they are conducted through the usual smoke conduit 25.

We are aware that a number of modifications may be made in the construction ofthe apparatus and we do not desire to limit ourselves, therefore, to the exact construc{ tion shown and described, but

What we claim and desire to secure by Letters Patent is:

1. In a heating apparatus, the combination with a casing and a heating drum disnosed within the casing, of a fresh air conduit entering said casing, a device for introducing a forced draft in said fresh air conduit, an air distributing device between said fresh air conduit and the casing, a

, chamber incommunication with the casing,

distributing pipes leading from said chamher, and heat radiating material disposed in the path of movement of the air, substantially as specified.

2. A heating apparatus comprising a casing and a heat radiating structure located within said casing, a freshair conduit, a device for introducing a continuous volume of fresh air into said conduit under a forced draft, a deflecting device between said con duit and said casing for distributing theincoming current of air, outlets from the lower end of said casing, a chamber for receiving the volume of air from said outlets, and heat distributing passages in communication with said chamber, substantially as specified.

3. In a heating apparatus, the combination with a casing and a heating drum dis posed within the casing, a fresh air conduit, a blower for introducing a forced draft in said conduit, a hood disposed between said conduit and the casing, a series of concentric partition walls in said hood adapted to distribute the current of air passing from said conduit to said casing, supports mounted within said casing and disposed between the inner wall of the casing and the outer wall of said heating drum, beds of heat radiating material on said supports, and an outlet passage through which the air passes from the casing after passing through said beds of heat radiating material, substantially as specified.

4'. In a heating apparatus, the combination with a casing and a heating drum located therein, of a fresh air conduit adapted to deliver fresh air to said casing, a blower RICHARD E. MACKEY. WILLIAM A. TIPTON.

Witnesses:

L. O. KINGSLAND, R. M. LAWRENCE. 

